scribnee



no Model.) 2 Sheets-Sheet 1;

0. E. SCRIBNER. CIRCUIT CONTROLLING MECHANISM FOR ARC LAMPS.

No. 502,535. Patented Aug; 1, 1893.

(N o Model.) 2 Sheets-Sheet 2'.

(J. E. SORIBNER.

GIRGUI'I CONTROLLING MECHANISM FOR ARC LAMPS. No'. 502,535. Patented Aug. 1, 1893.

InyEntUr MbnEssEs 'g'B'y UNITED STATES PATENT OFFICE.

CHARLES E. SCRIBNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE IVESTERN ELECTRIC COMPANY, OF SAME PLACE.

CIRCUIT-CONTROLLING MECHANISM FOR ARC LAMPS.

SPECIFICATION forming part of Letters Patent No. 502,535, dated August 1, 1893.

Application filed July 26, 1890. Serial No. 360,062- (No model.)

To all whom it may concern: The object of my invention herein is to pro- Be it known that 1, CHARLES E. SORIBNER, vide for automatically lighting and burning acitizen of theUnited States, residing at Ohiany number of lamps, one after the other, cago, in the county of Cook and State of Illieach of these lamps being complete in itself 55 nois, have invented a certain new and useful and capable of independent regulation so that Improvement in Circuit-Controlling Mechanthe arcs of all the lamps may be maintained ism for Are Lamps, (Case No. 230,) of which the of the same average length, or, if it should be following is a full, clear, concise, and exact dedesired, of different lengths. a

scripti0n,reference being had to the accompa- My invention herein is not limited to any 60 IO nying drawings, formingapart of this specifiparticular form of regulating and feeding cation. mechanism, but relates more particularly to My invention relates to electric are light the circuits between the different lamps and systems and its object is to provide automatic the means for bringing the different lamps means for switching the current from one into circuit one after the other, the first lamp 65 lamp of the series, after its carbons are conof a group being so arranged that when it sumed, to the next lamp and so on in order lights all the succeeding lamps of the group that the lamps may be caused to burn one afwill be switched out of circuit.

ter the other in consecutive order. My invention will be readily understood by I-Ieretofore various forms of multiple and reference to the accompanying drawings, in 70 2o duplex lamps have been employed. whichi In Letters Patent No. 147,827, granted Mat- Figure 1 is a side elevation of one of sevthias Day, J12, February 24, 1874, for electric eral electric lamps of the group adapted to lights, is shown a lamp in which two or more be burned consecutively one after the other.

sets of carbons are controlled by the same Fig. 2 is a diagram illustrative of the circuits 75 regulating mechanism. In the Day lamp the between two such lamps.

different pairs of carbons are arranged in Like parts are indicated by similar letters multiple arc and the mechanism is such that of reference throughout both figures.

the arc will alternate from time to time be- The lamp, as shown in Fig. 1, is of the gentween the different sets of carbons. eral type illustrated and described in my Pat- 80 In British Patent No. 3,170 of 1877, granted entNo. 415,571 of November 19, 1889, in which LouisDenayrouse, provision is made for burna balance lever mechanism is employed, the

ing several candles successively one after the construction being such that when the curother. rent is sent through the lamp the lifting or In Letters Patent No. 219,208, granted coarse wire magnet attracts its armature, 8 5 Charles F. Brush, September 2, 1879, for an thereby lifting the clutch lever and estabelectriclamp,one regulating mechanism is emlishing the arc. During the subsequent opployed in such manner that two, three or more eration of the lamp the lever of the lifting sets of carbons may be burned one after the magnet is held in a fixed position against its other. In the Brush lamp, however, the mechpole, the feeding or regulation of the are be- 90 o anism is such that the succeeding arcs will be ing accomplished by the fine wire magnet inof different lengths. cluded in the shunt of the are so arranged as In Letters Patent No. 418,758, granted me to raise and lower the fulcrum of the lever January 7, 1890, I have provided in the same system connected with the clutch lever. In lamp in connection with one regulating andthis manner the upper carbon is fed until the 9 5 one feeding mechanism means whereby two descent of the rod is arrested byastop or butsets of carbons may be burned completely ton provided upon the upper end thereof or one after the other. In my lamp the arcs of otherwise. Then the descent of the rod is the different sets will be of the same length; thus arrested the arc becomes abnormally the construction, however, is such that only long and the cut out is closed so as to shunt roo two pairs of carbons can be used in the same the are which is thus extinguished.

l It Wlll presently be observed that any lamp provided with a cut out constructed so as to be closed upon the formation of an abnormally long are may be used in connection with my invention herein.

The circuits of the lamp shown in Fig. 1 may be as follows: First, starting from the hook the circuit extends first to the insulated contacts of the cut out a and thence to hook lVe have another circuit from hook which extends through the lifting magnet 19 and thence to the frame of the lamp and thence through the carbons to the rod of hook and thence out. The feeding or fine wire magnet c is in a shunt around the carbons and the out out a is so placed as to short circuit this fine wire magnet when the cut out is closed. The circuit through the cutout should have a slight amount of resistance so that some current in the first instance will be diverted through the lifting magnet to cause the same to attract its armature and open the cut out, whereupon the entire current will be directed through the lifting magnet to cause the same to draw down its armature, thus separating the carbons and establishing the arc; the opening of the cut out removes the short circuit from the feed or fine wire magnet.

I will now describe my invention as illustrated in Fig. 2 in which are shown lamps so arranged that when current is established the first lamp of the group will light and burn until an abnormal arc is formed, whereupon the first will be automatically cut out and the are transferred to the next lamp and so on. Thus I am enabled to indefinitely prolongthe light, there being practically no limit to the number of lamps that may be included in a single group since each lamp in its burning is entirely independent of all the other lamps so that each may be adjusted as to length of are without regard to any other of the group. The line in when there is no current on finds circuit as indicated through the cut cuts a a of the different lamps and thence to the line out. We have, however, a circuit branched from the line in through the lifting magnet and to the frame of each lamp and thence through the carbons of the lamp and thence to the line out. Thus in lamp 1 we have the circuit d extending through lifting magnet Z) and thence to the frame of the lamp and the upper rod, thence through the pair of carbons and thence to the line out. In lamp 2 we have the circuit (1 through the lifting magnet b thence through the carbons of the second lamp and to the line out. The feeding or fine wire magnet of each lamp is included in a shunt around the carbons and the cut out of each lamp, when closed, serves to short circuit this feed magnet. Thus in lamp 1 we have the circuit 6 through fine wire magnet c and connected on different sides of the carbons of lamp 1. The cut out a when closed short circuits this shunt circuit e as shown. In lamp 2 in like manner we have the shunt circuit of high resistance 6 through the feeding magnet 0 this shunt circuit 6 being connected around the carbons of lamp 2 and the cutout a being so arranged that when closed it will short circuit the feeding magnet c as shown. Suppose now current is established. The first impulse will be through cut outs a a of the different lamps; enough current, however, will be sent through the lifting magnets to slightly energize them. The tendency will be to open all the cut outs. It is apparent, however, that the opening of the cut out of the first lamp of the group will. cut off the current from all the succeeding lamps. Therefore only the first lamp will light and burn and all the other lamps will be out of circuit during the time the first lamp is burning. An abnormally long arc of the first lamp, however, will cause its feeding magnet to become so strong as to carry the clutch lever or some portion of the movable mechanism into position to close the cut out. In the lamp shown the upper c011- tact of the cut out a is carried on the clutch lever and therefore when the arc of lamp 1 is long enough to divert sufficient current through feed magnet 0', feed magnet 0 draws down its armature and hence lowers the clutch lever so as to close the cut out ct. The closing of this cut out a shunts the arc and also the feed magnet c. Now assuming that the descent of the rod has been arrested by a stop the circuit will be permanently broken between the carbons of lamp 1. Thereupon the next lamp will be brought into service; thus the cut out a being closed and the fine wire magnet 0 being short circuited and the circuit of lifting magnet 11' being opened at the carbons the first lamp is entirely out of circuit so that the current will pass to the second lamp and the same action will be repeated at the second lamp as heretofore de scribed with respect to lamp 1. Thus any number of lamps may be burned one after the other.

To will consider lamp 2 as the last of a group. The lamps of the group preceding lamp 2 we will assume to have been all burned one after the other and to be each in the condition last described with respect to lamp 1, that is to say, the circuit of lifting magnet I) open and the circuit closed through the cut out a so that lamp 1, may be entirely disregarded with respect to the burning of any subsequent lamp of the group. Therefore, when lamp 1 is through burning the current will be sent through lamp 2; the lifting magnet will be excited and the carbons separated and the are established. The out out a being open the fine wire or feeding magnet 0 will perform its function of feeding, that is, as the arc grows long the feeding magnet will become more strongly energized and so lower the clutch until it opens sufficiently to permit the rod to descend but without actually closing the cut out (B; when the carbons are consumed or the descent of the rod arrested the cut out a will be closed and the lamp will be out out of circuit.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A group of two or more are light regulators connected with the same circuit, one branch of said circuit being connected directly through a cut out device of each of the lamps, each lamp being separately provided with an electro-magnetic device for separating the carbons and an electro-magnetic device connected in shunt of the are for feeding the carbons together, as consumed, said feeding device being connected in each lamp with the cut out to close the same when the arc becomes abnormally long, whereby the said lamps will be caused to burn automatically one after the other; substantially as specified.

2. Two or more electric arc regulators connected with the same circuit, said circuit extending througha cutout of each of the lamps and each lamp being provided with a lifting electro magnetic device included in a branch circuit extending from the line in through said lifting device to its carbons and thence to the line out, and a feeding electro magnetic device included in a shunt around the carbons, the cut out of each lamp when closed serving to short circuit such feeding magnet, whereby when current is established the first lamp will be lighted and the succeeding lamps will be disconnected from the circuit while the first lamp is burning, while upon the interruption of the branch circuit through the feeding device of the first lamp its out out will be closed and the arc transferred to the next lamp of the group, substantially as and for the purpose specified.

3. In combination, several arc lamps, each having a lifting magnet in the main circuit with its carbons, a feeding magnet in shunt of its carbons, feeding mechanism actuated thereby, and contact points carried by said mechanism arranged to be closed together when the arc becomes abnormally long, and conductors connecting like members of the carbons of all the lamps together in parallel,

and other conductors connecting said out out M contacts of the different lamps together in series, the remaining carbon of each lamp being connected with one contact point of its own cutout; substantially as described.

4. In combination several arc lamps, each having an electro-magnet in series with its carbons and an electro-magnet in shunt of its carbons and cut out contacts arranged to be actuated by said series magnet to be sepa rated when said magnet is energized, and by said shunt magnet to be closed together when said shunt magnet is abnormally energized, one limb of the main circuit joining one member of each lamp in parallel with the like members of the other lamps, another limb of the main circuit extending through all the cut outs in series, the remaining member of each lamp being connected with the main circuit at its own cut out; substantially as described.

In witness whereofI hereunto subscribe my name this 23d day of July, A. D. 1890.

CHARLES E. SORIBNER.

Witnesses:

WM. S. GRANGER, O. D. GRANDALL. 

